Mixing-machine.



PATENTBD MAR. 31, 1903 H. c. CHAMBERS.

MIXING MACHINE. 1 APPLIOATION'IILED MAY 31, 1902.

N0 MODEL.

. w ll wil UNITED STAT-Es PATENT OFFICE.

HENRY o. CHAMBERS, OF CINCINNATI, o f1o,:Ass1GNoR o CHAMBERS MAcmNEoo,OF CINCINNATI, OHIO.-

' MIXING-MACHINE;

SPECIFICATION forming part of Letters Patent No. 723,987, dated March.31, 1903. Application filed May 31,1902. serial No. 109,647., (Nomodel.)

To ctlZ whom it may concern.-

Be it known that I, HENRY O. CHAMBERS, a citizen of the United States,and a resident of the city of Cincinnati, in the county of HamiltonandState of Ohio, have invented certain new and useful Improvements inMixing-Machines; and I do declare the following to be a clear, full, andexact description thereof, attention being called to the accompanyingdrawings, with the reference numerals marked thereon, which form also apart of this specificatiorr; 5 w

This invention relates'toimprovernents in machines used for agitatingplastic, comminuted,granulated,or powdered substances, like choppedmeat, dough, sand, plaster, &c., the object being tothoroughlyintermingle the various ingredients composing the mixture.

be mixed, devices to agitate these latter for such purpose, and means tooperate these devices. I

The invention consists of certain features of arrangement andconstruction of the parts mentioned whereby certain advantages andresults are obtained, one of which is an improved action' of the mixingand agitating devices, another being the possibility of tipping thevessel, permitting quick and convenient removal of the contents thereofby dumping the same;

In the following specification and particularly pointed out in the claimfollowing is found a full description of the invention, together withits operation, parts, and con-' struction, which latter isalsoillustrated in the accompanying drawings,in which.

Figure 1 is an end view of my improved mixing-machine. Fig. 2 is a frontview of; the same. Fig. 3is a top view of-it. is a verticalcross-section thereof. Fig. 5 is a view of the other end of the machine,showing also the vessel tippedso as to dump its contents. Fig. 6-isan-enlarged horizontal section of one end of the machine-to show certaindetails, particularly as to the shaftbearings. Fig. 7 is a verticalsection of one of these latter, and Fig. 8 a front view thereof withparts broken away.

The matter to be intermixed is contained Such machines comprisegenerally a) suitable vessel to contain the substance to Fig.4?

in a trough-shaped vessel 10, the ends of which are formed of parallelheads, from each of which projects a trunnion-journal 11, which occupyeach a bearing 12 in frames 13, one on each side,and whereby the vesselis supported in a manner to be free to be tipped. For agitating. thecontents there are a number of blades 14', each carried by arms 15,angularly arranged, and each of which has an open hub 16,- wherebytheyare attached to. their driving-shafts 17 by meansof screws 18. Byattaching them in this manner any of the blades may be readily removed,if necessary, for any purposewithout requiring the particular shaft tobe taken out. There are two of these latter supported horizontally inbearings 19, which project outwardly from the heads, one on each side ofthe trunnion-journal thereat and at equal distance therefrom. Thedistance between the shafts is such as to cause in the middle part ofthe trough the outerparts of the blades thosesupported on one shaft toreach over beyond the center and travel through part of the rotary pathof the blades on the othershaft. They are so set, however, as to cleareach other. The interior surface of the trough is shaped to correspondto the path of the outer edge of these blades, so that these latter passclosely to such surface, thereby preventing any dead spaces, wherematter mightaccumulatebeyond the range of these blades, and therebyescape their action.- 'By' reason of the lapping in the center of therotary paths of these blades the bottom'of the trough is given a shapeas shown, producing a' longitudinal ridge 21, which extends through thetrough ,from end to end. Theshafts and-the blades thereon-are rotated inthe same direction, which causeslthe outer parts of these bladeswhere-they pass through the same space in the center of the vessel andbetween'the shafts to travel in opposite directions. Thdeifect of thismovement is that th'e'mass to be mixed is first moved vertically inonedirection at that point byone set of blades, after which the other setof blades moves it in the other direc- IOO that they also'work the massconstantly from each end toward the center of the trough. For rotatingthe shafts each carries at one end a cog-wheel 22, which cog-wheels arealined and operated by a pinion 23, meshing into each and supportedbetween them on a stud-shaft 24. This latter is rigidly secured andsupported in the adjacent trunnion-journal 11. The pinion is rotated bymeans of a pulley 25, which is rigidly mounted on its hub, so that theyrotate together. The connection of these two for common operation mightalso be accomplished in a different manner. It is preferable to providealso a loose pulley 26, which is mounted at the outer end of theextended shaft.

27 is a belt-shifter provided with a hub 28, whereby it is carried atthe end of a rod 29, to which it is held by a set-screw 31. The bore ofthis hub and the end of' rod 29 which it receives are round, so that thebelt-shifter may be adjusted tangentially with reference to the pulleysto meet the angle of the belt. The other part of rod 29 is square andsupported in a bearing 32, thus preventing itfrorn turning, and withinwhich hearing it maybe slid back and forth from one pulley to the otherby a handle 33. Bearing 2 is carried at the end of an arm 34, which hason its other end a hub 35, whereby it is mounted on the extreme end ofstud-shaft 2-l. It can be swung on this end to suit the location of thebelt, after which it is held in adjusted position by means of aset-screw 36. The belt-shifter may also be swung on rod 29 to the otherside (see dotted lines in Figs. 1 and 3) in case the position of thebelt requires it.

Lubricant is supplied to the shaft-bearings through oil-holes 37. Toprevent any of this oil reaching the interior of the vessel through theopenings where the shafts extend, I enlarge the hore of the bearingsimmediately outside of the head, as shown at 35, leaving the shaftentirely free at that point, so that the oil is not confined thereat bythis inner surface of the bearing. This enlarged portion is furthermoreleft open, as shown at 39, so that any superfluous oil working out ofthe hearings will enter this enlarged part 3S,which it is unable totraverse and from which it escapes through opening 39. v

The openings in the heads through which the shafts pass are packed torender them liquid-tight, the packing 41 being seated in the enlargedpart 38 of the bearing and in the end next to the head of the vessel,which part thus serves as a stuffing-box. This packing is held in placeby a gland 42, the lugs 43 of which extend outwardly through the openparts 39 of the enlarged part of the bearing. They are held in place bybolts, the heads 44 of which occupy recesses 45, formed on the outsidein the ends of the vessel and the ends of which project through holes orslots in the lugs 43. Nuts 46 are finally applied on the outside to theends of these bolts, whereby the gland is held in position. These bolts,as well as the glands, are placed in position before the shafts areplaced in position, the glands being introduced through openings 39. Thesize of these openings is such as to prevent them from being closed bylugs 43 when the gland is in position, thus preventing interference withthe other function of this enlarged open hearing, which is to preventoil from entering the vessel and to provide for escape of such oil. Fortilting this vessel I provide a worm-wheel 47 on one of the trunnions11, preferably on the one on the left side of the machine, theparticular trunnion being extended for such purpose beyond its bearing12. This wheel, which need notbe a complete one, since the vessel doesnot make a complete turn, is operated by a worm 48, mounted in boxes49and manipulated by a hand-wheel 51. The end frames which sup port thevessel are notched in front, as shown at 52, in order to clear thebearings of the front shaft while the vessel is tilted. The end of thenotch may serve as a stop to limit the tilting motion of the vessel. Itmay, however, come also to rest against a tie-rod 53 in front. In normalposition the bearings of the rear shaft rest on stops 54. The vessel maybe dumped while the machine is in operation, in which case the directionof rotation of the blades of the front shaft is such as to favor theevacuation of the contents from the vessel.

The agitating devices as to shape and number may be more or lessmodified to accomn1odate more suitably special purposes of use andparticular substances operated upon.

Having described my invention, I claim as new- In a mixing-machine, thecombination of a trough-shaped receiving vessel,parallel shafts arrangedlengthwise therein in a horizontal position, agitating devices mountedon these shafts, means to rotate them in the same direction, bearingsfor these shafts projecting from the outside of the ends of thereceiving vessel, trnnnion-journals, one each also projecting from theseends and arranged centrally between the shaft-bearings on each side,bearings for these trunnion-journals, frames at each end of the machineof which these bearings form a part, stops 54 against which the bearingsof one shaft come to rest when the mixing-trough is in normal positionand notches 52 in each end frame to clear the bearings of the othershaft when the trough is tilted and to also limit its movement in thetilting position.

In testimony whereof I hereunto set my signature in the presence of twowitnesses.

HENRY C. CHAMBERS.

Witnesses:

C. SPENGEL, ARTHUR KLINE.

